Find the value of the argument for which the value of the function y = -x / 5 + 2.5 is 2.26

We need to find the value of the argument from the known value of the function.

From the condition, we have the following function:

y = – x / 5 + 2.5

We need to find its value at y = 2.26. That is, we get that:

2.26 = – x / 5 + 2.5

We have a simple linear equation with one unknown. Let’s solve this equation:

– x / 5 = 2.26 – 2.5;

– x / 5 = – 0.24;

x / 5 = 0.24;

x = 0.24 * 5;

x = 1.2

Thus, we get that for the value of the function y = 2.26, we get that the argument takes the value x = 1.2.